CN1942156A - Disposable absorbent articles having wetness appearing graphics - Google Patents

Disposable absorbent articles having wetness appearing graphics Download PDF

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Publication number
CN1942156A
CN1942156A CN200580011448.2A CN200580011448A CN1942156A CN 1942156 A CN1942156 A CN 1942156A CN 200580011448 A CN200580011448 A CN 200580011448A CN 1942156 A CN1942156 A CN 1942156A
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CN
China
Prior art keywords
goods
forming compositions
absorbent article
top flat
egative film
Prior art date
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Granted
Application number
CN200580011448.2A
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Chinese (zh)
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CN1942156B (en
Inventor
刘旷凯
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Procter and Gamble Ltd
Procter and Gamble Co
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Procter and Gamble Ltd
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Publication of CN1942156A publication Critical patent/CN1942156A/en
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Publication of CN1942156B publication Critical patent/CN1942156B/en
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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/42—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators with wetness indicator or alarm
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
    • A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
    • A61F13/514—Backsheet, i.e. the impermeable cover or layer furthest from the skin
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium

Abstract

The present invention relates to a disposable absorbent article comprising a liquid pervious topsheet, a liquid impervious backsheet that is at least partially joined to the topsheet, an absorbent core disposed at least partially between the topsheet and the backsheet, and a wetness indicator printed onto a surface of said backsheet wherein the wetness indicator comprises a graphic that further comprises at least one responsive color composition and a varnish coating disposed adjacent to said responsive color composition; wherein upon wetting, said graphic becomes visible to the unaided eye.

Description

Disposable absorbent article with wetness appearing graphics
Technical field
The present invention relates to comprise the disposable absorbent article of humidity indication, the figure that this indication manifests when being included in moistening.This figure also comprises at least a response color-forming compositions and is arranged on the varnish coat at described response color-forming compositions top.When by such as the fluid wets of urine the time, this figure becomes apparent consumer or wearer's naked eyes.
Background technology
Disposable absorbent article adds figure often as general parts.In most of the cases, with these graphical application to the egative film of product, so that these figures are as seen when wearing this product.These figures have been printed directly on the assembly of egative film or have been printed on the separate layer (for example, tissue layers) that is arranged on the egative film.
In disposable absorbent article, add figure multiple reason is arranged.For example, no matter be to wearer or buyer, figure can improve the outward appearance and the captivation of product.Figure also can influence the occupation mode of disposable absorbent article.For example, the nursing staff can utilize figure on the disposable diaper to amuse and/or educate one's children when being the child wear diaper.Equally, the figure on the disposable training pants can provide and be beneficial to education and the incentive mechanism of using toilet training process.Figure on the training pants also can be used for increasing the interest of child to product, and therefore increases the interest of child in using toilet training process.
Figure can be used for also indicating when the urine dipping takes place.For example, this area known when moistening, comprised that such as the disposable absorbent article of diaper the figure that occurs or disappear is with the indication dipping.Yet up to now, it is still impossible to send the disposable absorbent products that comprises following printed pattern, and this figure can be set directly on the film portion that absorbs the product egative film and have when being exposed to liquid final apparent figure for consumer and wearer's naked eyes.
Summary of the invention
Therefore, the present invention relates to disposable absorbent article, these goods comprise:
A) liquid permeable topsheet;
B) join the egative film of the liquid non-permeate on the top flat to small part;
C) be arranged on absorbent cores between top flat and the egative film to small part; With
D) humidity that is printed on the described backsheet surface is indicated; Described humidity indication comprises figure,
Described figure also comprises the varnish coat that at least a response color-forming compositions and contiguous described response color-forming compositions are provided with;
Wherein when moistening, as seen described figure becomes naked eyes.
The specific embodiment
Definition
Term used herein " absorbent article " is meant the device that absorbs and hold body exudates, more particularly be meant be close to or contiguous wearer's body setting to absorb and to hold the device of multiple body exudates.Absorbent article can comprise diaper, training pants, adult-incontinence underwear, feminine hygiene article, breast pad, nursing pad, bib, wound dressing product etc.Term used herein " body fluid " or " body exudates " include, but are not limited to urine, blood, vaginal secretions, breast milk, perspiration and feces.
Term used herein " absorbent cores " is meant the absorbent article parts, and its major decision comprises collection, transmission, distributes and store the goods fluid handling properties of body fluid.Equally, absorbent cores does not typically comprise top flat, egative film or the outer covering piece of absorbent article.
Term used herein " bonding " is meant that different materials is connected (cohesion or bonding) in its at least a portion.The coupling part can be at random or can have pattern for example striped, screw thread, dot etc.The coupling part can be positioned at periphery, run through surf zone, or both all have.Suitable method of attachment known in the art be can utilize, binding agent, heat, pressure, curling, ultrasonic, chemical (by hydrogen bond or other cohesiveness), machinery (for example fastener, winding), hydraulic pressure, vacuum and their combination included but not limited to.
Term used herein " composite construction " is meant a kind of multiple zone structural, forms wherein that these regional materials are operationally united or bonding.These zones even can closely contact and make complex have integrative-structure.In addition, these zones can be in layering (relatively) arrangement or arrange side by side.
Term used herein " disposable " uses with its conventional sense, be meant that the different time period of process at limited number of time, preferably is less than about 20 times, more preferably less than about 10 times, even more preferably less than about 5 times, and most preferably be less than the goods of disposing or abandoning after about 2 uses.
Term used herein " close adhesion " is meant the physics contact between two-layer, makes their anti-separation there not be the Disengagement zone of visually recognizing easily simultaneously.In a specific embodiment, utilize meltblown that internal layer and skin are laminated in the graph area to form the crossover network of adhesive filaments together with binding agent.
Term used herein " joint " comprises wherein by element directly being attached on other element and element directly is fixed to configuration on other element, and wherein by element is attached to intermediate member, intermediate member is attached to again on other element, thereby element is fixed to configuration on other element indirectly.
Term " macropore " is meant the Kong Taida that has so that can't realize the material of fluidic capillary tube transmission, and its bore dia that has usually is greater than about 0.5mm.More particularly, the diameter in hole is greater than about 1.0mm.
Term used herein " melts and sprays " and " meltblown fiber web " is meant the fleece with the fiber that is formed by following method, molten thermoplastic clamp-oned a plurality ofly be generally circular fine molded capillary tubies and become heated at high speed gas/air flow that fusion filament or long filament enter into convergence, this air-flow attenuates to reduce fibre diameter melt filament.Reducing obviously greater than the reducing of fibre diameter in the spun-bond process of this fibre diameter, the fiber diameter of gained microfibre be greater than 0.2 micron, and typically in 0.6 to 10 micron scope.Thereafter, meltblown fibers is by high velocity air delivery and be deposited on the collection surface, forms the fleece that the fiber by random scatter constitutes.Various melt-blown process are known in the art.
Term used herein " micropore " is meant and can transmits fluidic material by capillarity.
Term used herein " non-woven material " and " non-woven webs " are meant a kind of fleece, and it has independent fiber and is arranged on the structure that forms substrate therebetween, but not with identifiable repetitive mode.Non-woven webs can form by several different methods known to those skilled in the art, for example, meltblown, spun-bond process, wet-laying method, air lay method and multiple bonding-careless method.
Term used herein " operationally associating " is meant and comprises and be in the structure that is in contact with one another the different materials of position to small part in the use.These Material Physics are separated and but each all shows the character with independent measurement.These materials can arranged with coordination with relativeness or on the xy plane on the z-direction.
Term used herein " paper pulp " or " cellulose fibre " comprise those natural fibers derived from trees or plant (for example, hardwood fiber, cork fibrous, Fructus Cannabis, Cotton Gossypii, Caulis et Folium Lini, Spanish grass (Esparto), silkweed, Caulis et Folium Oryzae, bagasse etc.), their processing/regenerated fiber (artificial silk for example ) or chemically derived fiber (for example cellulose esters), and their combination.Suitable hardwood fiber comprises eucalyptus fibers.Suitable hardwood fiber can prepare by kraft paper or other chemical pulping method.Suitable cork fibrous comprises southern softwood (SS) fiber and northern softwood (NS) fiber.The cork fibrous that can be used for this paper can be by chemistry (for example, but be not limited to kraft pulp) or machinery pulping (for example, but be not limited to chemi thermo mechanical wood pulp (CTMP) and hot groundwood pulp (TMP)).
Term used herein " zone " is meant zone or the scope that comprises a kind of material, around this material can physically, chemically or visually be different from or contiguous material.Can comprise transitional region between a plurality of zones of material.These zones can be positioned on the z-direction or on the xy plane.Term used herein " z-direction " is meant length and the orthogonal direction of width with structure or goods.The z-direction is usually corresponding to the thickness of structure or goods.Term used herein " xy plane " is meant when member, core or goods are in flattened state, with described member, core or products thickness plane orthogonal.The xy plane corresponds respectively to the structure that is in flattened state or the length and the width of goods usually.
Term used herein " spunbond " and " spun-bonded fibre net " are meant the fleece with following fiber, this fiber becomes long filament by extruding molten thermoplastic by the microcapillary of a plurality of circles of spinning head or other configuration, makes the diameter of extruding long filament reduce rapidly to form by fluid tractive or other spunbond mechanism of knowing then.Spun-bonded fibre is not clamminess usually by quenching and when they are deposited on the collection surface.Spun-bonded fibre also generally has about 10 to about 30 microns meansigma methods usually continuously.
Term used herein " integrative-structure " is meant that comprising that the structure with different characteristic material, described material are bonded together makes these materials physical separation not substantially to form integral body, and integrative-structure shows the character that has by the combination of materials gained in it.These materials can concern with relative type on the z-direction or arrange with coordination on the xy plane.
The following detailed description relates to absorbent article.Yet disclosed goods might be modified and make all financial resourcess concept described herein can be applicable to other health or health promoting product equally, for example binder, dressing, cleaning piece, bib, surgical drage, operating coat etc.
Absorbent article
Absorbent article of the present invention comprises liquid permeable topsheet, joins the egative film of the liquid non-permeate on the top flat to, is arranged on the absorbent cores between top flat and the egative film and is printed on humidity indication on the described backsheet surface to small part to small part; Described humidity indication comprises that figure, described figure also comprise the varnish coat that at least a response color-forming compositions and contiguous described response color-forming compositions are provided with; Wherein as seen described figure becomes naked eyes when moistening.
In certain embodiments, absorbent article can add and comprise one or more assemblies, and described assembly is selected from outer covering piece, lateral plate, hoop, elastomeric element, fastening system, and their combination.
The absorbent article for example main body of diaper comprises absorbent cores and top flat at least.Outer covering piece forms base, and other parts of diaper add on it to form the integrative-structure of diaper.In alternative embodiment, manufacturer can be with the goods preform to generate trousers.Term used herein " trousers " is meant the disposable garment with waist opening and leg opening that is designed for baby or adult wearer.By wearer's lower limb being inserted leg opening and moving medicated underpants near to wearer's lower body position and trousers are through on one's body the user.Can include but not limited to utilize bonding refastenable and/or not reproducible fastening (for example, stitching, welding, binding agent, polymerization bonding, fastener etc.) that the part goods are bonded together by any suitable technique with the trousers preform.Although term " trousers " is used for this paper, medicated underpants also typically refers to " sealing diaper ", " prefastened diapers ", " pull-on diaper ", " training pants " and " diaper pants ".Suitable medicated underpants is disclosed among United States Patent (USP) 5246433,5569234,6120487,6120489,4940464,5092861,5897545,5957908 and the U.S. Patent Publication 2003/0233082A1.
Top flat
Absorbent article of the present invention comprises top flat.Top flat preferably has submissive, sensation of softness, and does not stimulate wearer's skin.It can be on one or two direction elastic stretch.In addition, top flat is that liquid is permeable, allows liquid (for example, menstruation, urine and/or loose stool) to be easy to penetrate its thickness.Suitable top flat can for example be weaved and non-woven material by large-scale material manufacture; Thermoplastic film perforate or hydroforming; Porous foam; Reticulated foams; Cellular thermoplastic film and thermoplastic scrim.Suitable weave with non-woven material can be by natural fiber such as the wood fiber or cotton fiber; Synthetic fibers such as polyester, polypropylene or polyethylene fibre; Or their combination is formed.If top flat comprises fiber, then this fiber can be by spunbond, carded, wet-laying, melt and spray, water thorn or in other words process with methods known in the art.The fibroreticulate a kind of suitable top flat that comprises the fibre length polypropylene fibre is by Walpole, the Veratec of branch of the International Paper Company of MA, and Inc. makes, and commodity are called P-8.
Can be used for preferred top flat of the present invention and be selected from high loft nonwoven material top flat and perforated film top flat.The perforated film top flat typically is that bodily exudate can see through and non-absorbent, and allows that fluid flows back to and the trend of rewetting wearer skin weakens.Suitable perforated film comprises that being disclosed in United States Patent (USP) 5628097,5916661,6545197,6107539 and PCT patent announces among WO 00/69382 A2 those.
In addition, be used for solid feces deposition suitable topsheet material thereon can be comprised the perforate non-woven material that these holes are in the part that the feces deposition region with goods is in line at least.Suitable perforate non-woven material be described in greater detail in United States Patent (USP) 6414215,5342338 and 5941864 and U.S. Patent Publication 2002/017376 in.In another embodiment of feces treatment articles, this type of top flat can be handled the member combination with feces, and for example below this type of top flat, it is further described in the above-mentioned patent documentation.
Suitable shaping membrane top flat is disclosed in the United States Patent (USP) 3929135,4324246,4342314,4463045,5006394.Other suitable top flat can be made according to United States Patent (USP) 4609518 and 4629643.This type of shaping membrane with " DRI-WEAVE " available from The Procter ﹠amp; GambleCompany of Cincinnati, Ohio and be positioned at Richmond available from general headquarters, the Tredegar Corporation of VA with " CLIFF-T ".
Preferably, at least the part of top flat make or be processed into by hydrophobic material hydrophobic so that wearer's skin is opened with the fluid separation applications that is contained in the absorbent cores.If top flat is made by hydrophobic material, then preferred top flat be processed into hydrophilic so that liquid infiltrate top flat quickly to the small part upper surface.Can make the top flat possess hydrophilic property by joining in the top flat with the surfactant processing or with surfactant.The appropriate method of handling top flat with surfactant comprise with surfactant spray top sheet materials and/or with material soaking in surfactant.This type of processing and hydrophilic more going through are contained in United States Patent (USP) 4988344,4988345 and 4950254.More the going through of some appropriate method that is used for surfactant is joined top flat 24 is found among the United States statutory invention registration H1670.Alternatively, top flat can comprise hydrophobic perforate fleece or thin film.This can realize by removing the hydrophilicity-imparting treatment step and/or apply hydrophobic treatment to top flat in production technology, and is for example such as ptfe compounds or the hydrophobic lotions compositions of SCOTCHGUARD, as described below.In this type of embodiment, preferred hole does not enough have remarkable resistance to allow the infiltration of aqueous fluid such as urine greatly.
Can be coated with lotion known in the art in any part of top flat.The embodiment of suitable lotion comprises and is described in United States Patent (USP) 5607760,5609587,5635191,5643588 and 5968025 those.Lotion can be handled as above-mentioned hydrophobization separately or with another kind of agent combination.Top flat also can comprise antibacterial or handle with it that some embodiment of antibacterial are disclosed in PCT and announce among the WO95/24173.In addition, any part of top flat, outer covering piece or top flat or outer covering piece can embossed and/or surperficial hacking so that the outward appearance as cloth to be provided more.
Top flat can comprise one or more holes so that exudate passes through its infiltration, for example urine and/or feces (solid, semisolid or liquid) easily.At least the size of main aperture is important for realizing that required refuse is sealed performance.If main aperture is too little, refuse perhaps can not pass through this hole, this be since source of waste do not align with the position in hole or owing to the feces diameter greater than the hole.If Kong Taida, the skin area that " the bleeding back thing " that can (be come own product) polluted increases.Typically, the hole area that should have is between about 10cm 2With about 50cm 2Between.The area that the hole preferably has is between about 15cm 2And 35cm 2Between.
In addition, top flat can maybe can be shortened so that a void space to be provided between top flat and core by all or part of elastification.Exemplary configurations comprises being described in greater detail in the top flat of elastification or shortening in United States Patent (USP) 4892536,4990147,5037416 and 5269775.
Egative film
It is impervious that egative film is preferably fluid (for example, menstruation, urine and/or loose stool), and preferably by the plastic sheeting processing and manufacturing, also can use other flexible liquid impervious material certainly.Term used herein " flexible " is meant submissive and readily conforms to the material that conforms to profile with the general shape of human body.Egative film prevents in the absorbent cores institute's exudate of absorbing and holding and soaks the goods that contact with absorbent article, for example sheet, underpants, nightwear and underwear.Therefore egative film can comprise woven fabric or non-woven material, polymeric film such as polyethylene or polyacrylic thermoplastic film and/or composite such as film coating non-woven material (that is, having theca interna and outer non-woven layer).Suitable egative film is the polyethylene film of about 0.012mm (0.5 mil) to about 0.051mm (2.0 mil) thickness.Exemplary polyethylene film is by Clopay Corporation, Cincinnati, and Ohio is with trade name BR-120 and BR-121 and Tredegar Film Products, and Terre Haute produces with trade name XP-39385.The preferred embossed and/or surperficial hacking of egative film is to provide more the outward appearance as cloth.In addition, egative film still can prevent to allow when exudate from seeing through egative film steam overflow (that is, egative film is gas-pervious) from absorbent cores.The size of egative film is determined by the size and the selected accurate absorbent article pattern of absorbent cores.
Egative film and top flat are separately positioned on the garment surface and the body surface of contiguous absorbent cores.Preferably both are connected absorbent cores with known any connected mode and top flat, egative film or this with those links well known in the art.Yet embodiment of the present invention are envisioned is that in a part and top flat and the egative film of wherein whole absorbent cores one or two is not connected.
For example, independent line, screw thread or the round dot of a row of the patterned layer of the even pantostrat that egative film and/or top flat can be by binding agents, binding agent or binding agent is fixed on the absorbent cores or interconnects.Found satisfied binding agent by St.Paul, the H.B.Fuller Company of Minn. produces with trade name HL-1258 or H-2031.Link will preferably include the open type pattern network of adhesive filaments, described in United States Patent (USP) 4573986.The exemplary link of the open type pattern network of long filament comprises that several rows are coiled into the adhesive filaments of spiral pattern, as by explanation illustrated in equipment as shown in United States Patent (USP) 3911173,4785996 and 4842666 and the method.Alternatively, method of attachment can comprise heat bonding, pressure binding, ultrasonic bonds, dynamic mechanically is bonding or the combination of any other suitable method of attachment or these methods of attachment known in the art.
Egative film preferably includes internal layer and skin, and each layer can be adhered to another layer by several different methods known in the art, comprises that heat bonding, binding agent are bonding, ultrasonic lamination etc.Internal layer and the close adhesion of skin in graph area can weaken diffraction of light, and therefore improve the brightness and the overall visibility of humidity indicating graphic.Also can utilize the coating of binding agent slot type, high frequency wobbles pattern (for example coiling or jet mode) and other thin dawn and/or high coverage rate operation technique to realize that binding agent is bonding.Can be continuously or intermittently used proper lamination binding agent can be available from Findley Adhesives, Inc. or National Starch andChemical Company.
Can utilize diverse ways to make backsheet outer layer in a variety of forms.For example, skin can form carded web, bonded carded web, spun-bonded fibre net, needle punched fabric, woven fabric etc. so that common cloth-like texture to be provided to the wearer.Other additive such as titanium dioxide can account for outer field about 0.5% or still less, especially about 0.3% or still less.In a specific embodiment, skin comprises by about acrylic resin of 99.5% to 100% and about 0.5% or the spun-bonded fibre net that forms of still less other additive.Skin is desirably light weight section bar material, and basic weight is about 15g/m 2To about 30g/m 2, and more preferably about 15g/m 2To about 25g/m 2
Absorbent cores
Goods of the present invention also comprise one or more absorbent cores.Absorbent cores to small part is arranged between top flat and the egative film, and can have virtually any size or the shape compatible with disposable absorbent article.The exemplary absorbent structure as absorbent cores of the present invention that has obtained to accept extensively with business success is described in United States Patent (USP) 4610678,4673402,4888231 and 4834735.Absorbent cores also can comprise the twin-core system, and this system comprises and is arranged on the collection/distribution core that absorbs the chemicosolidifying fiber on the storage core, such as in United States Patent (USP) 5234423 and 5147345 detailed description.
Generally speaking, absorbent cores can absorb and keep liquid (for example, menstruation, urine and/or other body exudates).Preferably compressible, the suitable shape of absorbent cores and non-stimulated to wearer's skin.Absorbent cores can multiple size and dimension, and (for example, rectangle, ellipse, hourglass shape, "T"-shaped, Os Canitis shape, asymmetry etc.) made.Absorbent cores can comprise any one of the imbibition material that is generally used in the absorbent article, for example is commonly referred to the wood pulp of the pulverizing of airfelt.The embodiment that is used for other suitable absorbing material of absorbent cores comprises: crape cellulose wadding, the meltblown polymer that comprises coforming, chemicosolidifying, modification or cross-linked cellulosic, polyester fiber, mud coal lichen, the thin paper of synthetic fibers as curling comprise tissue packaging material and thin paper laminated material, absorbing foams, absorption sponge, super-absorbent polymer, absorbent gelling material or any material that is equal to or combination of materials or these mixtures of material.
" absorbent gelling material " discussed in this article be meant when contacting with aqueous fluid such as body fluid with " super-absorbent polymer ", absorbs this type of fluid and form those materials of hydrogel.These absorbent gelling materials typically can absorb a large amount of aqueous body fluids, and further can keep this absorbed fluid under modest pressure.These absorbent gelling materials typically are the form of discrete non-fibrous particle.Other form, for example fiber, foam, thin slice, band or other macrostructure also are applicable to this paper.Can comprise with the suitable absorption Binder Materials of open celled foam form and to be disclosed in United States Patent (USP) 3563243,4554297,4740520 and 5260345 those.
The configuration of absorbent cores and structure also (for example can change, absorbent cores can have to become caliper zones and/or have makes the profile thicker in the center, hydrophilic gradient, super absorption gradient or lower average density and lower average basis weight district such as acquisition zone, maybe can comprise one or more layers or structure).Yet total absorbability of absorbent cores should adapt with the desired use of design load and absorbent article.In addition, the size of absorbent cores can change to adapt to different purposes and the wearer of adaptation from the baby to the scope of being grown up such as diaper, incontinence pad, Pantiliner, daily-use sanitary towel and overnight hygienic band with absorbability.Absorbent cores can comprise other absorption piece that is generally used for absorbent article, for example removes knoisphere, wicking or acquisition layer or is used to increase by second top flat of wearer's comfort level.
In certain embodiments of the invention, absorbent article also can comprise the sublevel that is arranged between top flat and the egative film.Sublevel can be and can collect, stores or the fixedly any material or the structure of bodily exudate.Therefore, sublevel can comprise homogenous material or the multiple material of operationally uniting mutually.In addition, sublevel can be in aggregates with another element of absorbent article, perhaps can be the one or more individual components that directly or indirectly are connected with one or more elements of goods.In addition, sublevel can comprise the structure of separating with core, can comprise that perhaps at least a portion core maybe can be the part of at least a portion core.
Suitable material as sublevel can comprise large opening foam, the anti-compression of macropore non-woven high fluff material, the perforate of large-size particles shape and closed-cell foam (macropore and/or micropore), high loft nonwoven material, polyolefin, polystyrene, polyurethane foam or granule, the structure that comprises the wire/fiber ring bundle of most vertical orientations, above-mentioned absorbent core structures with perforation or depression etc.An embodiment of sublevel comprises mechanical buckle ring Connection Element, and its unpressed thickness is about 1.5 millimeters, with trade name XPL-7124 available from 3M Corporation, Minneapolis, Minnesota.Another embodiment comprised for 6 dawn, curl and the non-woven high fluff material of resin-bonding, its basic weight be 110 every square metre of gram and not compressed thickness be 7.9 millimeters, available from Glit Company, Wrens, Georgia.Absorption that other is suitable and non-absorption sublevel are described in United States Patent (USP) 6680422 and 5941864.In addition, sublevel or its any part can comprise or be coated with lotion or other known substance, to strengthen or to change the performance or the further feature of element.
The humidity indication
Disposable absorbent article of the present invention also comprises the humidity indication that is printed on the described backsheet film surface.The humidity indication comprises that figure, this figure also comprise the varnish coat that at least a response color-forming compositions and contiguous described response color-forming compositions are provided with.In most of embodiments, figure is invisible before moistening, and this is because its visibility minimum (promptly transparent) and typically present the color of its egative film on being printed on.Yet when moistening, as seen figure becomes naked eyes.
According to the present invention, the response color-forming compositions comprises by described composition weight meter about 1% to about 10%, and more preferably from about 2% to about 8%, and 3% to about 7% fluid dyestuff most preferably from about.
Suitable fluid dyestuff comprises aqueous ink coloring agent such as direct dyes, acid stain, basic stain, and the soluble dyestuff of multiple solvent.Embodiment comprises, but be not limited to C.I. Indian yellow 73, C.I. solvent yellow 94, C.I. Indian yellow 74, C.I. the solvent orange 32, C.I. solvent red 42, C.I. acid orange 11, C.I. solvent red 72, C.I. pigment orange 39, C.I. the solvent orange 18, C.I. acid red 87, C.I. solvent red 43, C.I. Pigment Red 9 0:1, C.I. solvent red 44, C.I. solvent red 45, C.I. the solvent orange 16, C.I. Xylene Red 91, C.I. Xylene Red 98, C.I. acid red 92, C.I. solvent red 48, C.I. paratonere 174, C.I. Xylene Red 95, C.I. solvent red 73, C.I. pigment red 191, C.I. Xylene Red 51, C.I. Food Red 14, C.I. paratonere 172, C.I. solvent red 140, C.I. Xylene Red 93, C.I. solvent red 47, C.I. Xylene Red 94, C.I. solvent red 141, C.I. the media purple 25, C.I. the solvent orange 17, C.I. solvent red 46, D﹠amp; Red 27 (C.I.45410:1) of C, D﹠amp; C orange 5 (C.I.45370:2), and their combination.Preferred fluid dyestuff is selected from D﹠amp; Red 27, the D﹠amp of C; C orange 5, and their combination.
Without being limited by theory, the present inventor it is believed that when contacting with fluid following varnish coat is partly dissolved and forms the crack in coating.Liquid infiltrates these cracks, reacts to form carboxylic acid with the lactone group of response color-forming compositions (or ink) then, and this carboxylic acid causes the demonstration of final color then.Following illustrated example illustrates this reaction.
Figure A20058001144800131
Solvent of the present invention is preferably nonaqueous solvent.Preferred nonaqueous solvent can comprise alcohol, acetas and their combination.Alcoholic solvent is preferably selected from isopropyl alcohol, normal propyl alcohol, ethanol, methanol and their combination.Similarly, suitable acetas solvent includes, but are not limited to isopropyl acetate, n-propyl acetate and their combination.The response color-forming compositions preferably includes the solvent by composition weight meter about 10% to about 99%.The response color-forming compositions more preferably comprises about 30% to about 80%, and even 40% to about 75% solvent more preferably from about.
The response color-forming compositions of example is the ink that is commercially available in Osaka Printing Industries with Omutsu-you-A ICA trousers (being translated from Japanese).
Varnish coat
The contiguous varnish coat setting of response color-forming compositions of the present invention.Without being limited by theory, this coating is as the various sealants of response color-forming compositions.When with liquid, aqueous the contact, figure can be finding of naked eye subsequently, and this is that liquid contact response color-forming compositions is allowed in this crack or entrance then owing to produced crack or entrance by the partly soluble varnish coat of liquid in coating.When contacting with liquid, response color-forming compositions (first and second) begins to show to have the expection color that forms figure.The material that is suitable for varnish coat can be selected from acrylic copolymer, lac base acrylic resin, polyamide, and their combination.To make these materials consciously be exemplary but never only limit to these materials.In addition, varnish coat can be arranged on by on the figure that forms of response color-forming compositions, under the figure, or under all have.In addition, the contiguous figure setting of preferred varnish coat makes one or more edges of coating extend beyond one or more edges of figure at least about 25%.More preferably, varnish coat extends beyond one or more edges of figure at least about 15%, and most preferably at least about 10%.
The egative film figure directly is apparent on the outer surface of absorbent article and is very attractive to child.In addition, father and mother and nursing staff can utilize this humidity indicating graphic as education and stimulation tool, to accelerate child's toilet training process.Therefore, by printing process the humidity indicating graphic suitably is arranged on the egative film.Term " setting " and modification thereof mean an element can be in aggregates with another element, and perhaps element can be the independent structure that is adhered to another element or is provided with or is provided with near another element with another element.Therefore, figure can directly or indirectly form or be applied on the outer covering piece surface, form or be applied between the layer of multilamellar outer covering piece, form or be applied on the substrate that outer covering piece is provided with or close outer covering piece is provided with, form or be applied in one deck of outer covering piece or another substrate perhaps other modification or their combination.
In preferred embodiments, figure can be printed (by aniline printing, intaglio printing, digital printed etc.).To this type of printing, can imagine and utilize multiple additional response color-forming compositions, thereby when the moistening goods, obtain colorful figure.Irrelevant with the type of selected printing process, preferred print speed printing speed scope is extremely about 500m/min of about 50m/min, and preferably about 100m/min is to about 300m/min.In preferred embodiments, print speed printing speed is set at about 200m/min.In addition, utilize multicolor printing that figure is printed on the stock footage with color-forming compositions, varnish coat then is printed from different printing stations.
In addition, other figure can be sprayed in or in other words be directly used on the backsheet layer.For example, in other embodiments, figure can be used for the layer that egative film is provided with or close egative film is provided with, for example relevant with absorbent assembly substrate includes but not limited to tissue layers, liquid handling layer, absorbed layer etc.
Be used on arbitrary surface that figure of the present invention can be positioned at egative film or be close to arbitrary surface (that is, towards clothes (outside being also referred to as) surface or towards health (in being also referred to as) surface), precondition is that from the product outside as seen figure keeps when moistening.In preferred embodiments, the humidity indicating graphic is printed on the inner surface of egative film.
The humidity indication can keep liquid to communicate with the absorbent assembly of product.Term used herein " liquid communicates " is meant that liquid such as urine can be sent to another layer or another element by one deck or an element.Absorbent assembly can comprise but not be to comprise a slit or dense area, adds a liquid Distribution Layer etc., with the position of guiding or extremely close residing egative film of figure of guide liquid and/or outer covering piece.
Be applicable to that absorbent article of the present invention comprises diaper, training pants, incontinence product, urine trousers, disposable underclothes etc.The suitable training trousers can have the sidepiece of stitching or the sidepiece of refastenable with the urine trousers.The present invention is particularly useful for helping to use the training pants or the urine trousers of lavatory training.Be applicable to that concrete diaper of the present invention and training pants are disclosed among United States Patent (USP) 3860003,4636207,4695278,4704115,4795454,4900317,4909803 (being published as USRE34920 again), 5085654,5492751,6476288,6627787,5507760,5609587,5635191,5643588,6118041, the SIRH1630,5246433,5769838,5899895,5899896 and 6120487.The other patent that suitable training pants is discussed is open in this paper front.
In a preferred embodiment, absorbent article also comprises the fastening system that is used to provide at least one first hoop of improved liquid and other body exudates sealing, the elastic waist features that improved stickiness and sealing are provided and formation side closure, closed first lumbar region and second lumbar region of keeping of side is in overlapped configuration, makes circumference around absorbent article keep side tension absorbent article is remained on one's body the wearer.Absorbent article also can be included in the elasticized side panels (not shown) in the lumbar region, but the parts to provide elasticity to extend, and it provides absorbent article more comfortable and meet the stickiness and the more effective application of profile.
The lower limb hoop of " elastification " can be many different configurations structure, comprise being described in the following United States Patent (USP) those: 3860003,4636207,4695278,4704115,4795454,4900317,4909803 (being published as USRE34920 again), 5085654,5492751,6476288 and SIR H1630.
For example, absorbent article can comprise one or more first hoops, and it provides the sealing of improved liquid and other body exudates.First hoop can be called also that outer leg cuff, lower limb enclose, flank, lower limb hoop or elastic cuffs.United States Patent (USP) 3860003 has been described disposable diaper, and it provides a contractile leg opening with flank and one or more elastic components that the lower limb hoop of elastification is provided.
In addition, absorbent article of the present invention can comprise one or more second hoops, and it also provides the sealing of improved liquid and other body exudates.Second hoop also can be called barrier leg cuff, interior lower limb hoop or " uprightly " elasticized flaps.United States Patent (USP) 4808178 and 4909803 (being disclosed as USRE34920 again) has been described the disposable diaper with " uprightly " elasticized flaps, and this flank improves the sealing of leg area.
First hoop and second hoop can all be provided is used as two hoops, example explanation as shown in United States Patent (USP) 4695278 and 4795454.Additional cuff can be provided in the goods of the present invention, as describing in detail among the United States statutory invention registration H1630.
Another parts that are included in goods of the present invention or the molectron are hydrophobic surface coated, as common unsettled U.S. Provisional Application serial number 60/543785 (P﹠amp; G Case 9528P) disclosed in.This hydrophobic surface coated can be paired with the hinder coating of the present invention on the barrier layer, perhaps can be close to one or more optional feature settings of absorbent article of the present invention or molectron.For example, on this hydrophobic surface coated one or more lower limb hoops, waist or other the regional inner surface that is arranged on absorbent article.
The relevant part of all references is incorporated herein by reference in the detailed Description Of The Invention; It is to its approval as prior art of the present invention that the quoting of any document not can be regarded as.
Embodiment
Embodiment 1
Comprise the following production of absorbent article of humidity indication as described in the present invention.The breathable polyolefin film is selected from any among BR-120 and the BR-121, and both all are commercially available in Clopay, Cincinnati, Ohio.Each breathability that has in these thin film is 1500 to 4000MVTR, and basic weight is 28g/m 2, and can be used as and carry out materials printed thereon.Be Windmoller ﹠amp; Holscher Olympia 736 ST, 6 color presses or 2 parts of humidity indication inks that separate of embossed plate print filling of equal value.First humidity indication ink is to comprise the lac of 20 ± 5% weight and isopropyl alcohol and the hydroxypropyl cellulose of 5% to 10% weight and the varnish coat of silicon dioxide of 60 ± 10% weight.Second humidity indication ink is the D﹠amp that comprises 3 ± 1% weight; The response color-forming compositions of the isopropyl alcohol of red 27,60 ± 10% weight of C, the silicon dioxide of 5% to 10% weight and hydroxypropyl cellulose.At first with 3g/m 2Interpolation weight and the linear velocity of 100m/min be the film printing varnish coat.The printing area of varnish coat is bigger by 20 ± 5% than the graphic designs area that is printed with second humidity indication ink, thereby varnish coat covers second humidity indication ink figure fully during printing process changes.
Then with this film drying and be wound on the roller and store.At this moment, the printing varnish coat and second humidity indication ink figure is not finding of naked eye fully.This thin film is merged in any absorbent article that is disclosed in following United States Patent (USP) then: 3860003,4636207,4695278,4704115,4795454,4900317,4909803 (being published as USRE34920 again), 5085654,5492751,6476288,6627787,5507760,5609587,5635191,5643588,6118041, SIRH1630,5246433,5769838,5899895,5899896 and 6120487.When this type of absorbent article was wetted, after about one minute, image began to be presented on the article chassis surface of clothes.After about 5 minutes, vivid pink clear picture shows.
Embodiment 2
Comprise the following production of absorbent article of humidity indication as described in the present invention.The breathable polyolefin film is selected from any among BR-120 and the BR-121, and both all are commercially available in Clopay, Cincinnati, Ohio.Each breathability that has in these thin film is 1500 to 4000MVTR, and basic weight is 28g/m 2, and can be used as and carry out materials printed thereon.Be Windmoller ﹠amp; Holscher Olympia 736 ST, 6 color presses or 2 parts of humidity indication inks that separate of embossed plate print filling of equal value.First ink is the D﹠amp that comprises 3 ± 1% weight; The response color-forming compositions of the isopropyl alcohol of C red 27 and 60 ± 10% weight.Second humidity indication ink is the lac that comprises 20 ± 5% weight, isopropyl alcohol and the hydroxypropyl cellulose of 5% to 10% weight and the varnish coat of silicon dioxide of 60 ± 10% weight.At first with 3g/m 2Impost and the linear velocity of 100m/min be film printing response color-forming compositions.Add varnish coat with identical speed, but its printing area is bigger by 20 ± 5% than the response color-forming compositions figure that is printed with first ink, thereby varnish coat covers the humidity ink fully during printing process changes.
Then with this film drying and be wound on the roller and store.At this moment, printing varnish coat and response color-forming compositions figure are not finding of naked eye fully.This thin film is merged in any absorbent article that is disclosed in following United States Patent (USP) then: 3860003,4636207,4695278,4704115,4795454,4900317,4909803 (being published as USRE34920 again), 5085654,5492751,6476288,6627787,5507760,5609587,5635191,5643588,6118041, SIR H1630,5246433,5769838,5899895,5899896 and 6120487.When this type of absorbent article was wetted, after about one minute, image began to be presented on the article chassis surface of clothes.After about 5 minutes, vivid pink clear picture shows.
Embodiment 3
Comprise the following production of absorbent article of humidity indication as described in the present invention.The breathable polyolefin film is selected from any among BR-120 and the BR-121, and both all are commercially available in Clopay, Cincinnati, Ohio.Each breathability that has in these thin film is 1500 to 4000MVTR, and basic weight is 28g/m 2, and can be used as and carry out materials printed thereon.Be Windmoller ﹠amp; Holscher Olympia 736 ST, 6 color presses or 3 parts of humidity indication inks that separate of embossed plate print filling of equal value.First humidity indication ink is to comprise the lac of 20 ± 5% weight and isopropyl alcohol and the hydroxypropyl cellulose of 5% to 10% weight and the varnish coat of silicon dioxide of 60 ± 10% weight.Second humidity indication ink is the D﹠amp that comprises 3 ± 1% weight; The response color-forming compositions of the isopropyl alcohol of C red 27 and 60 ± 10% weight.The 3rd humidity indication ink is and the used identical varnish coat of first printing station.At first with 3g/m 2Interpolation weight and the linear velocity of 100m/min be the film printing varnish coat.The printing area of the first varnish coat graphic designs is bigger by 20 ± 5% than the graphic designs area that is printed with second humidity indication ink, thereby varnish coat covers humidity indication ink figure fully during printing process changes.Indicate the printing area of ink also big by 20 ± 5% as the 3rd humidity of additional varnish coat than the figure that is printed with second humidity indication ink.Therefore, these two varnish coates are clipped in the middle the second ink figure.
Then with this film drying and be wound on the roller and store.At this moment, printing varnish coat and response color-forming compositions figure are not finding of naked eye fully.This thin film is merged in any absorbent article that is disclosed in following United States Patent (USP) then: 3860003,4636207,4695278,4704115,4795454,4900317,4909803 (being published as USRE34920 again), 5085654,5492751,6476288,6627787,5507760,5609587,5635191,5643588,6118041, SIR H1630,5246433,5769838,5899895,5899896 and 6120487.When this type of absorbent article was wetted, after about one minute, image began to be presented on the article chassis surface of clothes.After about 5 minutes, vivid pink clear picture shows.
The relevant portion of all documents of quoting in detailed Description Of The Invention is incorporated herein by reference; Quoting of any document may not be interpreted as its approval as prior art of the present invention.
Although illustrated and described the present invention with specific embodiments, it will be apparent to those skilled in the art that many other variations and modifications may be made in the case of without departing from the spirit and scope of protection of the present invention.Therefore, in additional claims, comprise all such changes and modifications that belong in the scope of the invention consciously.

Claims (10)

1. disposable absorbent article, described absorbent article comprises:
A) liquid permeable topsheet;
B) join the egative film of the liquid non-permeate on the described top flat to small part;
C) be arranged on absorbent cores between described top flat and the described egative film to small part; With
Be characterised in that described goods also comprise the humidity indication that is printed on the described backsheet surface; Described humidity indication comprises that figure, described figure also comprise the varnish coat that at least a response color-forming compositions and contiguous described response color-forming compositions are provided with; Wherein when moistening, as seen described figure becomes naked eyes.
2. goods as claimed in claim 1, wherein said color-forming compositions comprises:
A) by the fluid dyestuff of the weight of described compositions about 1% to about 10%; With
B) by the solvent of the weight of described compositions about 10% to about 99%.
3. goods as claimed in claim 2, wherein said solvent are the nonaqueous solvent that is selected from alcohol, acetas and their combination.
4. goods as claimed in claim 3, wherein said alcohol is selected from isopropyl alcohol, normal propyl alcohol, ethanol, methanol, and their combination.
5. goods as claimed in claim 3, wherein said acetas is selected from isopropyl acetate, n-propyl acetate, and their combination.
6. goods as claimed in claim 1, the material that wherein said varnish coat comprises are selected from acrylic copolymer, lac base acrylic resin, polyamide, and their combination.
7. goods as claimed in claim 1, wherein said varnish coat are set on the described response color-forming compositions.
8. goods as claimed in claim 1, wherein said varnish coat are set under the described response color-forming compositions.
9. goods as claimed in claim 8, wherein said varnish coat also are set under the described response color-forming compositions.
10. one kind is printed on method on the absorbent article with humidity indication, is characterised in that said method comprising the steps of:
A) provide absorbent article, wherein said goods comprise top flat, egative film and absorbent cores;
B) by the humidity indication is printed on the described backsheet surface it is arranged between described egative film and the described absorbent cores; Described humidity indication comprises that figure, described figure also comprise the varnish coat that at least a response color-forming compositions and contiguous described response color-forming compositions are provided with;
Wherein when moistening, as seen described figure becomes naked eyes.
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US7332642B2 (en) * 2004-04-19 2008-02-19 The Procter & Gamble Company Disposable absorbent articles having printed wetness indicators

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EP1753385B1 (en) 2016-01-13
US8348920B2 (en) 2013-01-08
WO2005102239A1 (en) 2005-11-03
JP4777340B2 (en) 2011-09-21
US8568384B2 (en) 2013-10-29
CN1942156B (en) 2010-07-28
US20050234415A1 (en) 2005-10-20
JP2007532273A (en) 2007-11-15
US20130178810A1 (en) 2013-07-11
EP1753385A1 (en) 2007-02-21

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